The 9112 Protocol: The First 24 Hours of a Cyber Crisis
In global digital amateur radio networks (DMR), the talkgroup “9112” (a fusion of the US 911 and the European 112) is a dedicated virtual channel designed for one specific purpose: absolute emergency traffic. Unlike legacy analog frequencies (such as 145.500 MHz FM) where operators must actively scramble to clear the channel, a dedicated DMR talkgroup provides an immediate, sterile environment by design. When you switch to 9112, you are in a dedicated crisis room where only critical, life-saving communication takes […]